Just like in all the books and movies, once we colonize Mars humans and martians will become two separate species. They will no longer be able to live on Earth without a suit and vice versa. Eventually and inevitably, these two former partners will begin to have disputes over resources and political issues. These disputes will escalate until we are at full blown war. Earth will win the war but the martians form an underground which will defeat Earth's occupation. Mars will setup powerful planetary defense systems. The moon becomes the DMZ and all transfers of goods or meetings happen there.
That's the what I see happening. It is a shame. But I can see no way to avoid it.
I don't think that's remotely part of God's script for the future.
imho, His script is the only one that matters.
Besides . . . it has often appeared to me on reflecting, that when human tech and political systems reach a certain level, either we bring ourselves to our knees or God insures something happens that mushes things all up and mankind starts over at a very low tech level.
IF, as appears to be the case, earth is primarily designed to train and filter out a class of humble, loving, suffering-refined folks to 'rule and reign with Christ' over countless ages and worlds . . . then low tech cultures may work as well or better toward that goal than high tech cultures.
Having humans be refined by being "iron sharpening iron" with one another learning to "submit one to another" and to be sacrificially loving and helpful to one another . . . works quite well enough in low tech cultures--maybe better.
Then there's Almighty God Yehovah's promise: "Even if they build their nests among the stars, yet will I bring them down."